I convey the invisible,
Words can convey the invisible
I convey what can be felt,
Poetry etc. conveys feelings
But not seen,
Maybe just spoken?
Inside my heart,
I am not as nice as I could seem to be,
Words can be malicious, have double meanings
That is because I deliver the invisible,
At the speed of a mere blink,
Even just looking at text can allow you to sense the meaning.
I am very powerful,
And can bring comfort,
Words can be a lot(just look at Hitler), but a mom, say comforts their children with words.
Across my horizons, I am free,
People can say what ever they want
But still vulnerable to your opinion.
Of course, people want you to approve of what they say
What am I?
So I guess the spoken word?